org.infinispan.util.concurrent.locks.containers
Class ReentrantStripedLockContainer

java.lang.Object
  extended by org.infinispan.util.concurrent.locks.containers.AbstractStripedLockContainer
      extended by org.infinispan.util.concurrent.locks.containers.ReentrantStripedLockContainer
All Implemented Interfaces:
LockContainer

@ThreadSafe
public class ReentrantStripedLockContainer
extends AbstractStripedLockContainer

A LockContainer that holds ReentrantLocks

Since:
4.0
Author:
Manik Surtani (manik@jboss.org)
See Also:
OwnableReentrantStripedLockContainer

Constructor Summary
ReentrantStripedLockContainer(int concurrencyLevel)
          Creates a new LockContainer which uses a certain number of shared locks across all elements that need to be locked.
 
Method Summary
 ReentrantLock getLock(Object object)
           
 int getNumLocksHeld()
           
protected  void initLocks(int numLocks)
           
 boolean isLocked(Object object)
           
 boolean ownsLock(Object object, Object owner)
          Tests if a give owner owns a lock on a specified object.
 int size()
           
 String toString()
           
 
Methods inherited from class org.infinispan.util.concurrent.locks.containers.AbstractStripedLockContainer
acquireLock, releaseLock
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
 

Constructor Detail

ReentrantStripedLockContainer

public ReentrantStripedLockContainer(int concurrencyLevel)
Creates a new LockContainer which uses a certain number of shared locks across all elements that need to be locked.

Parameters:
concurrencyLevel - concurrency level for number of stripes to create. Stripes are created in powers of two, with a minimum of concurrencyLevel created.
Method Detail

initLocks

protected void initLocks(int numLocks)
Specified by:
initLocks in class AbstractStripedLockContainer

getLock

public final ReentrantLock getLock(Object object)
Parameters:
object - object
Returns:
the lock for a specific object

getNumLocksHeld

public final int getNumLocksHeld()
Returns:
number of locks held

size

public int size()
Returns:
the size of the shared lock pool

ownsLock

public final boolean ownsLock(Object object,
                              Object owner)
Description copied from interface: LockContainer
Tests if a give owner owns a lock on a specified object.

Parameters:
object - object to check
owner - owner to test
Returns:
true if owner owns lock, false otherwise

isLocked

public final boolean isLocked(Object object)
Parameters:
object - object
Returns:
true if an object is locked, false otherwise

toString

public String toString()
Overrides:
toString in class Object

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